Features and Benefits

  • 5Gbps JESD204B Interface
  • 70dBFS SNR
  • 90dBFS SFDR
  • Low Power: 864mW Total
  • Single 1.8V Supply
  • Easy to Drive 1.5VP-P Input Range
  • 1.25GHz Full Power Bandwidth S/H
  • Optional Clock Divide by Two
  • Optional Clock Duty Cycle Stabilizer
  • Low Power Sleep and Nap Modes
  • Serial SPI Port for Configuration
  • 48-Lead (7mm × 7mm) QFN Package

Product Details

The LTC2123 is a 2-channel simultaneous sampling 250Msps 14-bit A/D converter with serial JESD204B outputs. It is designed for digitizing high frequency, wide dynamic range signals. It is perfect for demanding communications applications with AC performance that includes 70dBFS SNR and 90dBFS spurious free dynamic range (SFDR). The 1.25GHz input bandwidth allows the ADC to under-sample high frequencies.

The 5Gbps JESD204B serial interface simplifies the PCB design by minimizing the number of data lines required.

The DEVCLK+ and DEVCLK inputs can be driven differentially with sine wave, PECL, or LVDS signals. An optional clock divide-by-two circuit or clock duty cycle stabilizer maintains high performance at full speed for a wide range of clock duty cycles.


  • Communications
  • Cellular Base Stations
  • Software Defined Radios
  • Medical Imaging
  • High Definition Video
  • Test and Measurement Instrumentation

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (2)

Software & Systems Requirements

Evaluation Software

LinearLab Tools

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

Product Recommendations

LTC2123 Companion Parts

Recommended ADC Drivers

Recommended D/A Converters

Recommended Suggested Oscillator

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Sample & Buy

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.